Questions tagged [structural-engineering]
Questions related to the integrity, design requirements, or analysis of structures.
279
questions with no upvoted or accepted answers
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(Non)simultaneous prestressing anchorage slip losses
Post-tensioned prestressed concrete beams suffer from a multitude of losses. When jacked, they suffer friction losses and their tension diagram is, for example (to simplify the drawing, I'm using the ...
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Eccentricity for staggered 2x4 wall
I have a staggered 2x4 wall on a 2x6 sill plate as illustrated below (16" on center on each side = 8" on center each stud). The wall is loaded from both sides by floor joists, so I would ...
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Explicit Dynamic ANSYS - Origami structure
I am working on a flat-foldable conical structure and I would like to carry out some dynamic tests on it (deployment to get the displacements and accelerations...).
I have designed the folded ...
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What is the cause of this cracking pattern in a simply supported beam?
Background
On May 5th 2022, a bridge was struck in Brantford, Ontario, Canada by a commercial vehicle. This vehicle struck a reinforced concrete protection beam placed on the on-coming side for the ...
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Maximum Slope of Truck Parking Lot
What is the maximum grade/gradient allowed for non-temporary (overnight or longer) parking/vehicle storage areas in parking lots for heavy-duty vehicles such as semi-trucks and buses?
All I could find ...
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Is there a name for a structure/building technique comprising three arches that share a central column? (Answer Found - Triple Arch System)
I saw a few minutes of a documentary that mentioned the domed roof of the largest mosque in Istanbul is supported by the strength of sets of three arches assembled so they share a common pillar. I'd ...
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Interference fit problem in ANSYS Workbench 16.1 - how do I get rid of pressure/displacement raisers?
I have an interference fit problem of two perfect cylinders modelled in 2D using symmetry. The overall interface pressure is around 20MPa lower than the hand calculations and I get non-uniform ...
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How to estimate the number of elevators required in a building?
I've been asked to estimate the number of elevators in a mixed use building with 37 floors (4 basement-parking floors), & design their operation.
Are their any specifications/guides/manuals that ...
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Is a Geodesic Dome (fuller dome) that floats possible? What material or engineering effort would it take?
Buckminster Fuller has popularized Geodesic Domes (invented by Dr. Walther Bauersfeld who based it on the use of convex polyhedrons), and thus, making buildings with a very large roofs that don't ...
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Can shear links be designed to hook between inner layers of top and bottom reinforcement?
I am tasked to design a bridge pile cap. Shear links are required. However due to heavy reinforcement used, contractor requested to hook the links between inner rebars to ease construction. Is this ...
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Water flow near dam geomechanics
I have basic Geomechanics question , one of the drawing is true and the others are wrong , which one ? , explain why the others are wrong .
First one wrong because the number of squares are not equal
...
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Bar released from upright position rotates about a lower hinge before being caught by a steel cable, how to calculate the tension on the cable?
I wish to check the safety factor of a steel cable that I've designed to catch a heavy bar that rotates freely due to the gravitational force acting on it.
From the upright position, I'm assuming that ...
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How to estimate effective area of contact between rough surfaces as function of surface roughness
The engineering problem that I am trying to solve is the following: I have two elements of a magnetic circuit that I must keep in contact through threaded fasteners. The primary objective is to ...
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Hencky nets/slip-line fields on the the interior of a closed domain
This is a crossed post.
The equations for Hencky nets are usually solved in the exterior of some domain; typical examples are the upper half plane or the exterior of a circle. I would like to know ...
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Help sizing of lug attachment flange/plate?
Apologies for the crude drawing attached, but here goes. Given Fx, Fy, and Fz loads applied at the lug hole, I've distributed the loading into each of the 6 fasteners to size them. I've also sized the ...
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